Phonon dispersion of nano-graphite ribbons
| Autor: | Mitsutaka Fujita, Masatsura Igami, Seiji Mizuno |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Force constant
Qualitative difference Materials science Condensed matter physics Phonon Nanostructured materials General Physics and Astronomy Surfaces and Interfaces General Chemistry Condensed Matter Physics Surfaces Coatings and Films Condensed Matter::Materials Science Effective mass (solid-state physics) Molecular vibration Nano Graphite |
| Zdroj: | Applied Surface Science. :870-875 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/s0169-4332(98)00168-8 |
| Popis: | Based on the classical force constant models, we study numerically and analytically out-of-plane phonon-dispersion relations for two types of nano-graphite ribbons confined by the armchair- and zigzag-shaped edges. We demonstrate for two ribbons how the edge-localized vibrational modes, i.e., edge phonon modes, behave depending on edge environment by means of altering the effective mass of the edge sites. Special emphasis is placed on the qualitative difference in the phonon modes which are localized near two types of edges. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect